Results 21 to 30 of about 1,611,302 (259)

Evolution characteristics of total dissolved solids in the groundwater level funnel area in the Hufu piedmont plain

open access: yesShuiwen dizhi gongcheng dizhi, 2021
In order to reveal the response characteristics of total dissolved solids (TDS) increase to groundwater level decline and the main chemical components that drive TDS to increase in the core area of the groundwater level funnel in the Hufu piedmont plain,
Xiyu ZHANG   +2 more
doaj   +1 more source

Planar Ion Trap Geometry for Microfabrication [PDF]

open access: yes, 2004
We describe a novel high aspect ratio radiofrequency linear ion trap geometry that is amenable to modern microfabrication techniques. The ion trap electrode structure consists of a pair of stacked conducting cantilevers resulting in confining fields that
Hensinger, W. K.   +4 more
core   +1 more source

RGB-D based multi-modal deep learning for spacecraft and debris recognition

open access: yesScientific Reports, 2022
Recognition of space objects including spacecraft and debris is one of the main components in the space situational awareness (SSA) system. Various tasks such as satellite formation, on-orbit servicing, and active debris removal require object ...
Nouar AlDahoul   +2 more
doaj   +1 more source

Dose control and preliminary applications of radiation sterilization of medical and health care products using 10 MeV electron beams

open access: yesFushe yanjiu yu fushe gongyi xuebao, 2022
The single- and double-side dose distributions of 10 MeV electron beam irradiation were measured and extensively analyzed to optimize the irradiation process for medical and health care products.
ZHAO Yanjun   +7 more
doaj   +1 more source

An efficient scalable scheduling mac protocol for underwater sensor networks [PDF]

open access: yes, 2018
Underwater Sensor Networks (UWSNs) utilise acoustic waves with comparatively lower loss and longer range than those of electromagnetic waves. However, energy remains a challenging issue in addition to long latency, high bit error rate, and limited ...
Alfouzan, Faisal   +3 more
core   +1 more source

Power-law free overfall in subcritical flow regime

open access: yesAin Shams Engineering Journal, 2015
Free overfall can be used as a discharge measuring structure by a single measurement of end flow depth. Many theoretical and experimental studies carried out on free overfalls with different cross-section shape, different slope (mild and steep), and ...
Ali R. Vatankhah
doaj   +1 more source

Surface integrity optimization for ball-end hard milling of AISI D2 steel based on response surface methodology.

open access: yesPLoS ONE, 2023
This study focuses on systematically revealing how cutting parameters influence the surface integrity of ball-end hard milled surface of AISI D2 steel and proposing optimization scheme from surface integrity, wear resistance and fatigue resistance ...
Weimin Huang   +3 more
doaj   +1 more source

Propagation and deposition of stony debris flows at channel confluences [PDF]

open access: yes, 2015
The fluid dynamics of stony debris flows generated in two small tributaries adjacent to each other and flowing into a main receiving channel was analyzed experimentally at a laboratory scale.
Foti, E.   +2 more
core   +1 more source

Ultimate Load Tests on Bearing Behavior of Large-Diameter Bored Piles in Weathered Rock Foundation

open access: yesAdvances in Civil Engineering, 2020
Based on the vertical compressive static load test and pile mechanics test of three large diameter bored piles (one of the test piles was treated with postgrouting) in granite gneisses foundation, the bearing capacity, deformation characteristics, and ...
Xiaoyu Bai   +4 more
doaj   +1 more source

Model tests on bearing behavior of pile groups in collapsible loess ground under water immersion

open access: yesYantu gongcheng xuebao, 2021
The artificially prepared collapsible loess is used as the similar material to carry out 2×2 pile group model tests under water immersion.The change law of collapsibility deformation and the load transfer mechanism are analyzed.The results show that with
ZHANG Yan-jie 1, 2, WANG Xu 1, LIANG Qing-guo 1, JIANG Dai-jun 1, LI Jian-dong 1
doaj   +1 more source

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